Implementing user registration steps in the IdentityServer3 SSO process

Question

I am looking to use the Thinktecture IdentityServer3 solution as a single sign-on service in several web applications that the organization provides to external users.

Taking the MVC Authentication sample as a starting point, I consider the process of registering new users for more information when they first use the system. This process is common to all the services we provide, so I want to associate it with a single sign-on service.

Is there an elegant way to incorporate additional business logic into the IdentityServer3 core service? Basically, if this is a new user, I need to redirect them to some registration pages before transferring them back to the web application that they originally wanted to run for authentication.

Answer 1

Both documents

https://identityserver.imtqy.com/Documentation/docsv2/advanced/userService.html

and samples

https://github.com/IdentityServer/IdentityServer3.Samples/tree/master/source/CustomUserService

cover it.